Which of these would you consider for your next vehicle purchase?

2011 model year changes

The A6 and its high-performance sibling the S6, received a pretty thorough refresh in 2009, and there have been few changes to the model since. Quattro all-wheel drive is now standard on all but a couple A6 variations and HD radio is standard across the board for 2011.

Competitive comparison

Several powerful engines to choose from; two distinctive and stylish bodies; notable for both performance and luxury

Special features for 2011

In the filled-to-the-brim sports luxury segment, the Audi A6 and S6 supply both. Luxury notes such as standard leather seats and navigation system are included. The A6 comes with 265 hp on tap. The top-of-the-line S6 produces a whopping 435 hp for a 0-60 mph time of 5.1 seconds. Fuel efficiency in the smaller engines is as high as 30 mpg on the highway ? not too shabby for a 0-60 time of near 6 seconds.